Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Plano, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
630-552 5 ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2007-07-27   
630-552 6 CHCGIL24DS6  224C ONVOY, LLC 358   2014-09-07   
630-552 7 PLANILPORS0  9329 ILLINOIS BELL TEL CO 358      
630-552 8 PLANILPORS0  9329 ILLINOIS BELL TEL CO 358      
630-552 9 PLANILPORS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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